4TB SSD SATA III 2.5"

The WD Blue SA510 4TB has a user sentiment score of 12 out of 100, with multiple buyers reporting drive failures within months. It hits the SATA ceiling at 560 MB/s read, but random performance is below average at the 42nd percentile. The 4TB capacity is nice, but not nice enough to overlook the reliability disaster.

Sequential reads hit 560 MB/s and writes 520 MB/s, which is exactly what SATA III allows. For a SATA drive, that's as good as it gets. But random performance is where things get rough. The 90K random read IOPS and 82K random write IOPS put it at the 42nd percentile in our database. That's below average, and you'll feel it when loading lots of small files or booting Windows with a bunch of startup apps.

The TLC NAND and DRAM cache should help with sustained writes, but real-world feedback says otherwise. Owners mention sub-par write speeds and intermittent freezes, sometimes for a full minute every hour or two. That's not a benchmark issue, that's a quality control problem. The drive can hit its advertised numbers when it's working, but keeping it working seems to be the challenge.

Stack this against the Samsung 9100 PRO or Crucial T500 and the SA510 looks like it's from another decade. Those NVMe drives push multiple gigabytes per second, while the SA510 is stuck at 560 MB/s. The Kingston FURY Renegade G5 and Micron T710 also blow past it on speed, and they're often cheaper per gigabyte. The only place the SA510 wins is capacity in a 2.5-inch form factor, but even that's a niche need these days. If you have an M.2 slot available, every single one of those competitors is a better buy. If you're stuck with SATA only, there are still more reliable SATA options out there.

Pricing is all over the place. In the US, you'll see this drive listed anywhere from USD 750 to USD 1,130 across four listings. That's a USD 380 spread for the exact same drive. Best Buy tends to have the lower end of that range, so if you're set on this drive, that's where to look. In Europe, the spread is tighter at EUR 625 to EUR 690, but the real problem is what you're paying for. This is a SATA drive with below-average random performance and a terrible reliability track record, priced like a premium NVMe drive. The affordability percentile sits at 11th, which means almost everything else in this category gives you more for your money.

The WD Blue SA510 4TB is a SATA III drive that tops out at 560 MB/s read and 520 MB/s write. That's the ceiling for SATA, so on paper it looks fine. But our database puts its speed at the 37th percentile, which means most modern drives, especially NVMe ones, leave it in the dust. The 4TB capacity is the real story here, landing in the 93rd percentile, so you get a lot of room in a 2.5-inch package.

And then there's the elephant in the room. Our user sentiment summary scores this drive a 12 out of 100. Multiple verified buyers report failures within weeks or months. That's not a fluke, it's a pattern. The 400 TBW endurance rating and 5-year warranty look decent on the spec sheet, but if the drive dies before you can use them, they don't mean much.

If you value your data, skip this drive. The 12/100 sentiment score isn't just a bad day, it's a pattern of failures that multiple verified buyers have experienced. The random performance at the 42nd percentile means it's not even fast enough to justify the risk. And at the 11th percentile for affordability, you're paying top dollar for a drive that might die on you. Anyone with an M.2 slot should look at NVMe alternatives like the Crucial T500 or Samsung 9100 PRO. Even if you're stuck with SATA, there are more reliable options that won't make you fight through a frustrating warranty process when things go wrong.

The numbers don't lie, and they're not kind. A 12/100 user sentiment score with multiple verified failure reports is a dealbreaker, no matter how good the spec sheet looks. The 4TB capacity is impressive, and the sequential speeds are fine for SATA, but a drive that might brick your computer within months isn't worth the risk. The 5-year warranty sounds reassuring until you read the reviews about how painful the warranty process actually is. We can't recommend this drive when there are faster, more reliable, and often cheaper alternatives available.